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Seedless Plants. Chapter 9 Section 2. Nonvascular Plants. Very small plants that have rhizoids rather than ROOTS. Nonvascular plants. Water is absorbed and distributed directly through cell membranes and CELL WALLS. Grow in DAMP environments Reproduce by SPORES rather than seeds.
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Seedless Plants Chapter 9 Section 2
Nonvascular Plants • Very small plants that have rhizoids rather than ROOTS.
Nonvascular plants • Water is absorbed and distributed directly through cell membranes and CELL WALLS. • Grow in DAMP environments • Reproduce by SPORES rather than seeds
Examples • Mosses – green, leaflike growths arranged around a central stalk • Liverworts – flattened, leaflike bodies • Hornworts – have only one choloroplast in each of their cells
Nonvascular Plants • Frequently pioneer species – organisms that are the first to grow in new or disturbed areas and which change ENVIRONMENT conditions
Seedless Vascular Plants • Reproduce by spores, but have VASCULAR tissue that carries water and nutrients throughout the plants
Seedless Vascular Plants • Can grow BIGGER and THICKER than nonvascular plants • FERNS – largest group of seedless vascular plants
Ferns • Have stems, leaves, and ROOTS • LEAVES are called fronds • Reproduce by SPORES found on the back of their fronds
Club Mosses • Needlike leaves
Horsetails • Jointed stem with a HOLLOW center
Importance of seedless plants • Fuel – decaying seedless plants are compressed into peat and eventually COAL. • Soil conditioners • FERNS can be used for weaving material and basketry